Finding pH Of Solution

If K_(a) of a weal acid is 4xx4^(-6) and its concentration is 0.1 M. Find pH of solution

Find pH of solution formed by mixing 50ml of 1M HCl and 30ml of 1M NaOH?

Each of solution A and B of 100 L containing 4 g NaOH and 9.8 g H2SO4. Find pH of solution which is obtain by mixing 40 L solution of A and 10 L solution of B.

Half of the formic acid solution is neutralised on addition of KOH solution to it. If K_(a)" of " HCOOH" of " 2 xx 10^(-4) . Then find pH of the solution.

If 1 litre aq. Solution of H_(2)SO_(4) ( 10% by weight) with density 1.1 gm/ml, find th pH of solution.

Find the pH of solution prepared by mixing 25 ml of a 0.5 M solution of HCl, 10 ml of a 0.5 M solution of NaOH and 15 ml of water

For the cell Pt|H_(2)(g)|"solution"X||KCl("saturated")|Hg_(2)Cl_(2)|Hg|Pt the observed EMF at 25^(@)C was 600mV . When solution X was replaced by a standard phophate buffer with pH =7.00 , the EMF was 777 mV . Find the pH of solution X